* * *    Exercise With A Smile    * * * Colorado Friends Of Old Time Music And Dance is a non-profit organization that runs this community, participatory dances — such as contra dances — with live music and calling in the Denver and Boulder metro area of Colorado. No prior dance experience is necessary, and nearly all our dances are preceded by a lesson. Community dances are very social by nature — married and unmarried couples, singles accompanied with friends or arriving alone, and anyone from …